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Windows 7: Windows 7 is slow to boot and svchost is using 50% cpu

14 Apr 2016   #1
mynam

Win 7 64b
 
 
Windows 7 is slow to boot and svchost is using 50% cpu

Hi,

i have this Win7-64b desktop with all latest updates installed and pretty recent hardware. But it is running very slow. Symptoms are:

- after boot + autologon the system is unresponsive for at least 15 minutes. Showing a sort of flashing desktop, no response on mouse or keyboards actions.
- after the 15 minutes, the system becomes responsive but 50% CPU is used by scvhost.exe all time long. The high cpu is due to the update service. If I stop this the cpu goes down to say 0%.
- important (windows) updates install ok, but the optional updates fails to install. The install starts but then just hangs on downloading, without any visible progress.

What is the cause/solution for this?


My System SpecsSystem Spec
.
15 Apr 2016   #2
ICIT2LOL

Desk1 7 Home Prem / Desk2 10 Pro / Main lap Asus ROG 10 Pro 2 laptop Toshiba 7 Pro Asus P2520 7 & 10
 
 

Hello and welcome mynam mat some system specs please very hard to work with something we do not know much about .
System Info - See Your System Specs

But in any case I would be running these first up
SFC /SCANNOW Command - System File Checker
Disk Check < if necessary include the /f and /r in the command line as per Option2
SUPERAntiSpyware | Remove Malware | Remove Spyware - AntiMalware, AntiSpyware, AntiAdware!
Malwarebytes | Malwarebytes Anti-Malware Premium
AdwCleaner Download
ADW download from bleeping computer delete any rubbish found with the malware scans
My System SpecsSystem Spec
16 Apr 2016   #3
mynam

Win 7 64b
 
 

Hi,

sysinfo is found here: https://onedrive.live.com/redir?resi...int=file%2ctxt

Event viewer shows these errors:

Data error on device.

Device: \Device\RaidPort0
Model: WDC WD3200AAJS-22L7A0
Firmware Version: 01.0
Serial Number: WD-WCAV2N914071
My System SpecsSystem Spec
.

16 Apr 2016   #4
torchwood

W7 home premium 32bit/W7HP 64bit/w10 tp insider ring
 
 

Hi Mynam,
You appear to have a couple of problem devices, USB controllers, please update them.
They may or may not help with your windows update problem.
Its Very difficult to read you onedrive file, so some of the following might not need to be updated
Is Java upto date
Your Brother printer drivers are causing startup hangs
Firefox plugins are showing problems.

Please could you run from an elevated command mode
sfc /scannow

Roy
My System SpecsSystem Spec
16 Apr 2016   #5
torchwood

W7 home premium 32bit/W7HP 64bit/w10 tp insider ring
 
 

and update your Nvidia drivers

Roy
My System SpecsSystem Spec
17 Apr 2016   #6
ICIT2LOL

Desk1 7 Home Prem / Desk2 10 Pro / Main lap Asus ROG 10 Pro 2 laptop Toshiba 7 Pro Asus P2520 7 & 10
 
 

Yep agree with Roy and I still think a chkdsk and those malware scans would not go amiss.
My System SpecsSystem Spec
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 Windows 7 is slow to boot and svchost is using 50% cpu




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